Forensic Biology
Terms
undefined, object
copy deck
- In the modified Henry Fingerprint system, an ulnar loop on the right middle finger gets assigned a value of
- 0
- The secretions of __________ glands can be detected by the ninhydrin reagant
- sweat
- At a crime scene an example of a visible print might be
- print found in blood
- A secretor is an individual who
- release blood typing antigens in their body fluids
- The National DNA Database contains_________from_________________.
- DNA, convicted criminals
- Forensic investigators would search for a cold hit match when__________________
- they have DNA evidence from a crime scene
- For positive identification,_________ fingerprint points must match out of a total of ______
- 8-16, 150
- To develop prints on a mirror surface, one should use________
- gray powder
- Two methods for developing prints on absorbent surfaces are________ and _____________.
- Ninhydrin, Iodine Fuming
- Two methods for developing prints on non-absorbent surfaces are________and_________.
- powders, cyanoacrylate
- _______glands are associated with hair follicles.
- sabacceous
- The most definitive way to demonstrate that a sexual assualt has taken place is to identify the presence of ________
- spermatozoa
- What are the four components of seminal fluid?
- citric acid, fructose, acid phosphatase, choline
- A colormetric test for the enzyme_______ produced by the ________ can be used as a presumptive test for seminal fluid.
- acid phosphatase, prostate gland
- The Florence Test is a microcrystalline test for___, which provides presumptive evidence of seminal fluid.
- choline
- In addition to blood, two body fluids that can be used for blood typing are _______ and ______.
- seminal stains, saliva
- A fingerprint left in a pool of fresh blood would be known as a ______ print.
- visible
- The distinguishing characteristics of a central pocket loop
-
2 deltas
360 degree cirlce - The most common fingerprint patterns are of the _____ type.
- loops
- The fingerprint pattern known as _____ do not have deltas.
- arches
- The 4 building blocks of DNA are
-
adenylic acid
Guanylic acid
Thynylic acid
Cytonylic acid - Define Base Pair
- bonding of the bases
- Humans have __ pairs of chromosomes, which together contain __ (# of building blocks)
- 23, 4
- Define gene
- base sequence that codes for protein
- Define allele
- alternate form of a gene
- In a gel electrophoretogram of DNA heterozygosity at a forensic locus is indicated by ________.
- 2 peaks
- The amount of DNA needed for an STR analysis is _______.
- .02ng
- Define PCR Primer
- 20-30 bases long, pick out specific sequence.
- What happens in PCR cycle?
-
94 C strand seperation-breaks hydrogen bonds
60 C cooling of primers
72 C extension of primers - A plain whorl is characterized by
- a line being drawn between the 2 deltas that touch the 360 circle
- The secretions of ____ glands can be detected by the ninhydrin reagant because ninhydrin reacts with _____.
- sweat, amino acids
-
Define Ulnar Loop
Radial Loop -
Ulnar-loop opens toward little finger
Radial loop opens toward thumb - The human genome contains approx. ______ coding genes. The % of the human genome that does not code is ________.
- 30,000, 98.5
- Secretors___________. They make up _____ % of the population.
- release blood typing antigens in their body fluids, 85
- Define CODIS
- Combined DNA Index System
- Define STR Multiplexing
- allows several STR loci to be amplified in the same tube
- Define allelic ladder
- contains every known allele for each forensic locus